Calcium Phosphate
AKA “7758-23-8, CALCIUM PHOSPHATE MONOBASIC, Calcium dihydrogen phosphate, Acid calcium phosphate, Monobasic calcium phosphate, Monocalcium orthophosphate, Calcium bis(dihydrogen phosphate), Primary calcium phosphate, Calcium monobasic phosphate, Calcium phosphate (1:2)
Ingredient
Ingredient Facts
Calcium phosphate
AKA: 7758-23-8, CALCIUM PHOSPHATE MONOBASIC, Calcium dihydrogen phosphate, Acid calcium phosphate, Monobasic calcium phosphate, Monocalcium orthophosphate, Calcium bis(dihydrogen phosphate), Primary calcium phosphate, Calcium monobasic phosphate, Calcium phosphate (1:2)
Ingredient · Abrasive · EWG: 1
Synthetic
Clean
Calcium bis(dihydrogenorthophosphate)
Effective at 24.65%
Solubility Solubility: Cold water 1.8 g/100 cc @ 30 °C; decomposes in hot water. /Calcium phosphate monobasic monohydrate/
Formula
CaH4O8P2
Mol. Weight
234.05
CAS #
7758-23-8, 10103-46-5
Form
Powder
State
NKRA; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Dry Powder
See origin →
Functions
Abrasive
Antiplaque
Buffering
Bulking
Oral Care
Viscosity Controlling
Physical Exfoliant
Fights Plaque
Stabilizes pH
Adds Body & Volume
Antioxidant Protection
Reduces Inflammation
Wound Healing
Traditional Use
Used historically in traditional medicine as a mineral supplement. In cosmetics, developed as a conditioning agent and bulking ingredient in modern formulations.
Skin Types
all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
0.3%
49.0%
0%69%
Effective Range
CIR reported use: 0.3-47.7 | 6.8-49
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Calcium Dihydrogen Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Calcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Dicalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Dicalcium Phosphate Dihydrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tricalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Calcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Dicalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Dicalcium Phosphate Dihydrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Tricalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Composite Aerogel Scaffolds Containing Flexible Silica Nanofiber and Tricalcium Phosphate Enable Skin Regeneration.
Wang X, Yuan Z, Shafiq M, Cai G, Lei Z et al.
ACS applied materials & interfaces, 2024
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR